toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (accountId != null) 'accountId': accountId!,
if (email != null) 'email': email!,
if (firstName != null) 'firstName': firstName!,
if (holdTime != null) 'holdTime': holdTime!,
if (lastName != null) 'lastName': lastName!,
};